From: Eli Zaretskii <eliz@gnu.org>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: 12632@debbugs.gnu.org
Subject: bug#12632: file permissions checking mishandled when setuid
Date: Tue, 23 Oct 2012 21:50:31 +0200 [thread overview]
Message-ID: <83sj95ary0.fsf@gnu.org> (raw)
In-Reply-To: <5086EF99.6060008@cs.ucla.edu>
> Date: Tue, 23 Oct 2012 12:27:21 -0700
> From: Paul Eggert <eggert@cs.ucla.edu>
> CC: rgm@gnu.org, 12632@debbugs.gnu.org
>
> Rather than try to fix these problems, which are on a platform
> I'm not familiar with, I'll change the proposed code to
> do the following. This should be safe since it is what the
> trunk currently does now (modulo some refactoring) when on
> DOS or Windows platforms. And it can be tuned for DOS and
> Windows later, as needed.
>
> /* If FILE is a searchable directory or a symlink to a
> searchable directory, return true. Otherwise return
> false and set errno to an error number. */
> bool
> file_accessible_directory_p (char const *file)
> {
> #ifdef DOS_NT
> /* File names may have drive prefixes and "/" is not the only
> separator, so the POSIXish approach doesn't work in general.
> Use a straightforward approach instead. */
> return file_directory_p (file) && check_executable (file);
Just file_directory_p is enough, the other test adds no useful
information that isn't already gathered by the first test. (The
executable bit of a directory is invented on DOS_NT platforms, it
doesn't exist on disk.)
next prev parent reply other threads:[~2012-10-23 19:50 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-13 1:58 bug#12632: file permissions checking mishandled when setuid Paul Eggert
2012-10-13 7:23 ` Eli Zaretskii
2012-10-13 8:36 ` Eli Zaretskii
2012-10-14 6:16 ` Paul Eggert
2012-10-14 6:56 ` Eli Zaretskii
2012-10-14 18:14 ` Paul Eggert
2012-10-14 18:39 ` Eli Zaretskii
2012-10-14 19:42 ` Paul Eggert
2012-10-14 20:10 ` Eli Zaretskii
2012-10-14 20:17 ` Eli Zaretskii
2012-10-14 20:40 ` Paul Eggert
2012-10-14 20:53 ` Eli Zaretskii
2012-10-15 6:17 ` Paul Eggert
2012-10-15 17:31 ` Eli Zaretskii
2012-10-15 21:38 ` Paul Eggert
2012-10-16 3:46 ` Eli Zaretskii
2012-10-16 6:00 ` Paul Eggert
2012-10-16 16:36 ` Eli Zaretskii
2012-10-19 17:01 ` Paul Eggert
2012-10-19 18:41 ` Eli Zaretskii
2012-10-19 18:54 ` Paul Eggert
2012-10-19 19:05 ` Glenn Morris
2012-10-19 19:36 ` Paul Eggert
2012-10-20 2:25 ` Richard Stallman
2012-10-20 4:36 ` Paul Eggert
2012-10-21 1:44 ` Glenn Morris
2012-10-21 2:52 ` Paul Eggert
2012-10-21 4:24 ` Glenn Morris
2012-10-22 6:03 ` Paul Eggert
2012-10-22 17:19 ` Eli Zaretskii
2012-10-22 20:33 ` Paul Eggert
2012-10-22 21:04 ` Eli Zaretskii
2012-10-22 21:30 ` Paul Eggert
2012-10-23 0:40 ` Stefan Monnier
2012-10-23 1:46 ` Paul Eggert
2012-10-23 3:49 ` Eli Zaretskii
2012-10-23 3:47 ` Eli Zaretskii
2012-10-23 5:07 ` Paul Eggert
2012-10-23 16:44 ` Eli Zaretskii
2012-10-23 19:27 ` Paul Eggert
2012-10-23 19:50 ` Eli Zaretskii [this message]
2012-10-23 20:01 ` Paul Eggert
2012-10-23 23:15 ` Andy Moreton
2012-10-24 3:51 ` Eli Zaretskii
2012-10-19 19:10 ` Eli Zaretskii
2012-11-13 2:19 ` bug#12632: updated version of the patch Paul Eggert
2012-11-14 5:10 ` Paul Eggert
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